Artificial stone



FIG. 1 is a perspective view of the articial stone showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right end side thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a left end side view thereof; and,

FIG. 7 is a rear view thereof.

The design is the features of the artificial stone shown in the drawings. The most significant feature of the design is the peripheral shape of the stone. 

The ornamental design for artificial stone, as shown and described. 